<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta
    name="viewport"
    content="width=device-width, initial-scale=1.0"
  >
  <title>hello react</title>
</head>
<style>
  .title {
    background: skyblue;
  }
</style>

<body>
  <div id="test"></div>
  <script
    type="text/javascript"
    src="../js/react.development.js"
  ></script>
  <script
    type="text/javascript"
    src="../js/react-dom.development.js"
  ></script>
  <script
    type="text/javascript"
    src="../js/babel.min.js"
  ></script>
  <script type="text/babel">
    class MyComponent extends React.Component {
      render () {
      console.log(1111,this);
        return <h2>我是类式组件</h2>
      }
    }
    ReactDOM.render(<MyComponent />, document.getElementById('test'))
  </script>

</body>

</html>